Ford Mercury Villager 1997 Owner's Manual page 321

Handle a halogen headlamp bulb carefully and keep out
of children's reach. Grasp the bulb only by its plastic
base and do not touch the glass. The oil from your hand
could cause the bulb to break the next time the headlamps
are operated.
Do not remove the burned out bulb unless you can immediately
replace it with a new one. If a bulb is removed for an
extended period of time, contaminants may enter the headlamp
and affect its performance.
Removing the headlamp bulb
1. Make sure that the engine is off and the headlamp switch on
the instrument panel is in the OFF position.
2. Remove the electrical connector from the bulb by pulling the
connector away from the bulb assembly.
The headlamp bulb assembly
Maintenance and Care
WARNING
317